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    <title>vim的TAB与空格</title>

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<p>
在.vimrc中添加以下代码后，重启vim即可实现按TAB产生4个空格：
set ts=4  (注：ts是tabstop的缩写，设TAB宽4个空格)
set expandtab
</p>

<p>
对于已保存的文件，可以使用下面的方法进行空格和TAB的替换：
TAB替换为空格：
:set ts=4
:set expandtab
:%retab!
</p>

<p>
空格替换为TAB：
:set ts=4
:set noexpandtab
:%retab!
</p>

<p>
加!是用于处理非空白字符之后的TAB，即所有的TAB，若不加!，则只处理行首的TAB。
</p>


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